JP3035542B1 - CRT socket resistance element connection structure - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To connect a resistance element (10) by a simple operation,
Moreover, the present invention provides a CRT socket resistance element connection structure in which a CRT socket does not increase in size even when a resistor is connected. SOLUTION: An inner lead portion (10) of a resistance element (10) is provided.
b) is temporarily held so as to intersect with the press-contact groove (17). A pressure contact plate portion (19) having a pressure contact slit (20) recessed is connected to a connecting plate (18) connected to the focus contact (8), and the pressure contact plate portion (19) is press-fitted into the pressure contact groove (17). By connecting the connecting plate (18) to the square housing (4)
And the inner lead portion (10b) is pressed against the pressing slit (20). By attaching the connecting plate (18), the resistive element (10) can be connected to the focus contact (8).
The resistance element (10) can be housed in the mounting direction of the terminal (11) connected to the external lead wire (24) because it can be housed in the housing (4) first.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD OF THE INVENTION

[0002] The present invention relates to a CRT (Cathode-Ray) for connecting a cathode ray tube used for a color television or the like.
-Tube) The present invention relates to a socket structure, and more particularly to a resistance element connection structure of a CRT socket in which a resistance element is connected in series to a focus contact.

[0003]

2. Description of the Related Art Conventionally, in a CRT socket for connecting a cathode ray tube, an unnecessary radiation signal generated by a high-frequency signal applied to the cathode of the cathode ray tube enters a focus circuit block and affects the focus of an electron beam. In order to reduce the influence, a terminal connected to a flyback transformer is attached to the CRT socket, and a resistance element is connected in series between the terminal and the focus contact inside the CRT socket.

[0004] The resistance element can be connected by soldering the lead portions on both sides thereof directly to the terminal and the focus contact, respectively. However, the resistance element is required to be as small as possible in the housing of the CRT socket. The connecting operation was extremely difficult. Therefore,
Conventionally, a resistance element connection structure 100 of a CRT socket has been adopted in which both side lead portions of a resistance element are pressed and connected to pressure contact slits recessed in a terminal and a focus contact.

[0005] This conventional resistance element connection structure 100 will be described with reference to FIGS. 12 to 14. FIG. 12 shows a flat 2 of the CRT socket 101, a plan view of the CRT socket 101, and FIG. The main part rear view, FIG.
FIG. 2 is a perspective view of a main part showing the connection structure 100.

As shown in these figures, a CRT socket 101 has a cylindrical housing 102a on one side (upper side in the figure) and a square-shaped housing 102b on the other side.
Are assembled from a back surface side of a housing main body 102 integrally formed with the components. For this attachment, the square housing 102b is
The bottom surface is defined as an opening surface, and the opening surface is a bottom cover 102c which engages with the box-shaped housing 102b after each component is stored.
It is covered by.

The cathode ray tube is connected to the plane side of the cylindrical housing 102a, and as shown in FIG. 12, a plurality of contacts 104 are provided on the plane side so as to make fitting contact with each pin of the cathode ray tube neck. So that they are on the same circumference,
It is attached from the bottom side of the cylindrical housing 102a.

[0008] Of these contacts 104, 1
The contact indicated by reference numeral 04F is a focus contact to which a higher voltage is applied than the other contact 104, and in order to reliably insulate the contact 104 from the other contact 104, the connecting portion 105 at one end is connected to the lower portion. It is drawn into the housing 102b.

As shown in FIG. 14, the end of the connecting portion 105 is bent in a downward U-shape, and two parallel pressure contact slits 106 are formed in the bent portion. The connection piece 107a of the focus-side discharge electrode 107 formed so that the center protrudes in a spherical shape is press-fitted into one press-contact slit 106, and the focus-side discharge electrode 10
7 is electrically connected.

The focus-side discharge electrode 107 is formed in a discharge space 108 formed in the box-shaped housing 102b.
It is disposed to face the similarly formed ground-side discharge electrode 109 so as to form a discharge gap. This discharge gap does not act particularly at a normal voltage applied to the focus contact 104F. When an in-tube discharge occurs in the cathode ray tube, the spark energy is discharged to the ground-side discharge electrode 109, and the focus contact 104F From flowing back to the semiconductor element in the circuit.

Referring to FIG. 13, a box-shaped housing 102b
A terminal housing recess 111 is recessed from the opening surface 103 on the side separated by a partition 110 from the discharge gap chamber 108 in the inside, and a terminal 112 in which an external connection portion 112a and a resistance connection portion 112b are integrally connected is provided. Is housed. The portion of the terminal housing recess 111 where the external connection portion 112a is housed penetrates into the plane side of the box-shaped housing 102b (see FIG. 12), and the external lead wire 114 having the other end connected to the flyback transformer through this through hole. Of the elastic contact piece 112 of the external connection portion 112a.
c is elastically contacted. Also, the resistance connection portion 112b
As shown in FIG. 14, similarly to the end portion of the connecting portion 105, is bent downward in a U-shape, and a press-contact slit 116 is formed in the bent portion. The lead portions 115a on both sides of the resistance element 115 are press-fitted from the opening surface 103 of the box-shaped housing 102b into the pressure connection slits 116 and 106 at the ends of the resistance connection portion 112b and the connection portion 105, respectively. A resistance element 115 is connected in series between the back transformers.

In this connection operation, after the terminal 112 and the focus contact 104F are mounted in the box-shaped housing 102b, both ends of the lead 115
a are connected to the press contact slits 116, 1 formed in the terminal 112 and the connecting portion 105 of the focus contact, respectively.
Since it is only press-fitted into the connector No. 06, there is no soldering step and the work becomes easy.

[0013]

However, the CRT
The socket is required to be as small as possible in its overall shape due to the demand for high-density mounting. However, in the conventional resistance element connection structure 100, the resistance element 115 is arranged in parallel with the bottom surface of the square housing 102b. Due to this structure, the space for accommodating the resistance element 115 expands in the plane direction of the box-shaped housing 102b, which is an obstacle to miniaturization of the entire socket 101.

Therefore, as shown in FIGS. 15 and 16,
A resistance element connection structure 120 that accommodates the resistance element 115 in the vertical direction with respect to the square housing 121 has also been developed.

In the resistance element connection structure 120, the connecting portion 1 for connecting the lead portions 115a at both ends of the resistance element 115 to a terminal 122 and a focus contact (not shown).
The resistance element 115 is housed along the mounting direction of the terminal 122 on the side of the terminal housing recess 125, which is connected by press-fitting to the press-contact slits 124 formed in 23.

However, the resistance element connection structure 12
Even if it is 0, the terminal 122 and the focus contact are connected to the open bottom surface side of the square housing 121 (FIG. 15).
After mounting from above, a space for accommodating the resistive element 115 cannot be formed inside the terminal 122 or the focus contact, because the lead portion 115a of the resistive element 115 is press-fitted from the bottom side thereof. Therefore, a space for accommodating the resistance element 115 must be formed in a portion between the terminal 122 and the focus contact, and it is inevitable that the CRT socket becomes large by incorporating the resistance element 115. Met.

Moreover, since the resistance element 115 is accommodated in the vertical direction, the pressure contact slits 124 on the terminal 122 side and the focus contact side come close to each other, making it difficult to press-fit the bent lead portion 115a. One lead 115a of the element 115 has to be drawn out to the opening side, and it is necessary to provide a lead of an extra length.

The present invention has been made to solve the above problems, and can connect a resistance element by a simple operation.
Moreover, it is an object of the present invention to provide a CRT socket resistance element connection structure in which a CRT socket does not increase in size even when a resistor is connected.

[0019]

According to a first aspect of the present invention, there is provided a CRT socket resistance element connection structure, wherein a focus pin of a cathode ray tube is connected to a square housing having an opening surface on one side. A contact accommodating recess for accommodating a focus contact, a terminal accommodating recess for accommodating a terminal connected to an external lead wire, and a discharge gap chamber accommodating a focus-side discharge electrode and a ground-side discharge electrode connected to the focus contact with a discharge gap therebetween. In a resistive element connection structure of a CRT socket, a resistive element is connected in series between a focus contact attached to the contact accommodating recess from the opening surface and a terminal attached to the terminal accommodating recess from the opening surface. A contact that connects the contact and the focus-side discharge electrode integrally The plate is provided with a pressure contact plate portion in which a pressure contact slit is recessed, a pressure contact groove for press-fitting the pressure contact plate portion is formed in a portion adjacent to the contact accommodating recess in the square housing, and the outer lead portion is connected to the terminal. Temporarily hold the inner lead part of the resistance element connected to the pressure contact concave groove so as to cross the pressure contact groove, press-fit the pressure contact plate part from the opening surface into the pressure contact concave groove, attach the connecting plate to the square housing, and attach the inner lead to the pressure contact slit. The parts are pressed against each other.

By press-fitting the press-contact plate portion connected to the connecting plate into the press-contact concave groove, the connecting plate is attached to the square housing, and the inner lead portion of the resistance element and the focus contact are electrically connected. Therefore, it is possible to electrically connect to the focus contact by attaching the connecting plate without press-fitting the bent lead portion.

Since the resistance element can be accommodated in the box-shaped housing together with the attachment of the terminal,
In advance, before attaching to the square housing,
The outer leads of the resistance element can be connected, and the connection operation is easy, and connection by soldering is also possible.

According to a second aspect of the present invention, the terminal includes an external connection portion connected to an external lead wire, and a resistance connection portion integrally connected to a side of the external connection portion. A resistance accommodating portion is continuously provided inward from the portion of the terminal accommodating recess in which the connection portion is accommodated along the mounting direction of the terminal, and the resistance accommodating portion accommodates the resistance element having the outer lead connected to the terminal. It is characterized by.

Since it is not necessary to connect the resistive element after the terminal is mounted on the square housing, the resistive element can be accommodated by connecting the resistive accommodating portion inside the terminal accommodating recess along the terminal attaching direction. Therefore, the size of the CRT socket is not restricted by the space for accommodating the resistance element.

According to a third aspect of the present invention, there is provided a resistance element connection structure for a CRT socket, wherein the connection plate, the focus contact, and the focus side discharge electrode are formed integrally by punching a metal plate.

Since the focus contact, the connection plate, and the focus-side discharge electrode are integrally formed, the number of components is not increased, and the focus contact and the focus-side discharge electrode are also combined by press-fitting the connection plate.
It can be attached to a square housing.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a resistance element connection structure 1 of a CRT socket according to an embodiment of the present invention will be described with reference to FIGS.
1 will be described. FIG. 1 is a plan view of a CRT socket 2 provided with a resistance element connection structure 1, FIG.
3 is an exploded side view of the same portion, and FIG. 4 is a bottom view of the CRT socket 2 from which the base housing 3 is omitted.

The housing of the CRT socket has a cylindrical base at the front (upper in FIG. 1) and a base housing 3 having a rear opening at the upper surface, and a housing 4 having an opening at the bottom. It is composed of The contour of the box-shaped housing 4 is formed in substantially the same shape as the contour along the inner wall surface of the rear part of the base housing 3, and as shown in FIG. The engaging portions are engaged and integrated. When integrated, the bottom opening surface 4 a of the box-shaped housing 4 is covered by the rear portion of the base housing 3.

At the cylindrical front of the base housing 3,
A plurality of contacts 5 are attached from the bottom side of the front part, face the cylindrical and concentric circles on the plane side, and are fitted and contacted with the respective pins of the cathode ray tube neck 9 inserted from the plane side, It is supposed to connect.

As shown in FIG. 1, the rear portion of the front cylindrical portion is cut out in a fan shape, and when the box-shaped housing 4 is accommodated, the cut portion is formed in a complementary shape. The contact mounting portion 6 of the square housing 4 is fitted.

The contact mounting portion 6 is formed with two contact receiving recesses 7 which are insulated from each other, and each receives a focus contact 8.

As shown in FIG. 1, C according to the present embodiment
In the RT socket, two focus contacts 8 are accommodated in a square housing 4.
According to the focus contact 8, a pair of resistance elements 10, 10, terminals 11, 11, ground-side discharge electrode 1
2, 12 and the like are mounted at symmetric positions in the figure. Therefore, hereinafter, for convenience, one of the resistor element connection structures (the right side in FIG. 1) will be described, and the other description will be omitted.

The contact accommodating recess 7 for accommodating the focus contact 8 is for erecting and positioning the focus contact 8 in parallel with the other contact 5 attached to the base housing 3, and has a cylindrical shape surrounded by a partition wall 7a. Is formed. As shown in FIG. 5 (c), the bottom side (upper side in the figure) of the contact accommodating recess 7 is opened to mount the focus contact 8 from the bottom side, and the other side is flat through the pin insertion hole 7b. Penetrates to the side. The pin insertion hole 7b is located on the same circumference as the circumference on which the other contact 5 is provided, thereby allowing the focus pin (not shown) of the cathode ray tube connected to the CRT socket 2 to be in contact with the contact. It is guided into the accommodation recess 7.

As shown in FIG. 5B, the discharge gap chamber 13 for discharging the spark energy of the focus contact 8 is formed at the back of the box-shaped housing 4. Attachment frames 15a and 15b for positioning and housing the focus-side discharge electrode 14 and the ground-side discharge electrode 12 are recessed.

Between the front surface of the discharge gap chamber 13 in which the mounting frame portion 15 is recessed and the contact accommodating recess 7, two rows of press contact recessed grooves 17, which are surrounded by partition walls 16 and open to the bottom side, are provided. A recess 17 is provided, and the rear of the press contact groove 17 is continuous with the discharge gap chamber 13.

As shown in FIG.
Contact 8 accommodated in the discharge space 1
Focus-side discharge electrode 14 attached to the front surface of 3
Are press-formed integrally from the same metal plate together with the connecting plate 18 and the pair of press contact plate portions 19. That is, the focus contact 8 and the focus-side discharge electrode 14 are provided at both ends of the rectangular connecting plate 18 in the longitudinal direction, and a pair of press contact plate portions 1 are provided at both sides along the longitudinal direction of the connecting plate 18.
9 are bent in a direction perpendicular to the connecting plate 18 and are integrally connected.

The focus contact 8 is formed in a partially cylindrical shape so as to be in elastic contact with the focus pin.
It is formed so as to protrude laterally in a spherical shape.

As shown in FIG. 8 (a), the press contact plate portion 19 is provided with a press contact slit 20 extending from the center to the lower end along the central axis thereof. Pressing slit 20
The groove width of the inner lead portion 10b of the resistance element 10 described later
Formed with a width slightly smaller than the outer diameter of the pressure contact slit 20.
Is press-connected to the inner lead portion 10b to be inserted.

From the bottom side of the square housing 4, the connecting plate 18
Is pressed to press the pair of press-contact plate portions 19 into the press-contact concave grooves 17, the connecting plate 18 is positioned and fixed in the box-shaped housing 4, and at the same time, the focus contact 8 is received in the contact receiving recess 7, and the focus-side discharge is performed. The electrode 14
The periphery of the rectangular plate fits into the mounting frame 15a on the front surface of the discharge gap chamber 13 and is positioned and fixed. In this state,
The focus-side discharge electrode 14 is exposed along the front surface in the discharge gap chamber 13 and has a spherical central portion protruding laterally.

On the other hand, similarly to the focus side discharge electrode 14, the ground side discharge electrode 12 is formed so that the central portion of the rectangular plate protrudes laterally in a spherical shape. It fits with the mounting frame 15b on the rear surface and is positioned and fixed. In the present embodiment, a pair with another ground-side discharge electrode 12 arranged corresponding to another focus-side discharge electrode 14 is integrally formed, and the discharge gap chamber 13 is formed.
It is attached to the rear side.

In the discharge space 13, the ground-side discharge electrode 12
When the focus side discharge electrode 14 is positioned and fixed,
The central parts formed in a spherical shape face each other, and between them,
A discharge gap is formed.

In the present embodiment, as shown in FIG. 4, the discharge gaps formed for each of the two focus contacts 8 are formed radially from the center of the base housing 3. Thus, even if the connecting plate 18 is connected to the center of the focus discharge electrode 14, a sufficient insulation distance between the pair of focus discharge electrodes 14 can be secured. Therefore, as in the present embodiment, the connecting plate 18 and the focus discharge electrode 14 can be integrally formed in a symmetrical shape, and can be shared by the same components without considering the left and right mounting positions.

As shown in FIG. 5 (b), a terminal accommodating recess 22 for accommodating the terminal 11 is provided on the side separated by the discharge gap chamber 13 and the press contact groove 17 in the box-shaped housing 4 and the peripheral wall 21. It is recessed from the bottom side.

The terminal 11, as shown in FIG.
A resistance connection portion 23 electrically connected to the outer lead portion 10a of the resistance element 10 disposed in the RT socket 2, an external connection portion 25 electrically connected to an external lead wire 24 inserted from outside the CRT socket 2, It comprises a mounting portion 26 for connecting the two together.

The resistance connection portion 23 is composed of a horizontal substrate 23a and a pair of elastic contact pieces 23b curved from both sides of the horizontal substrate 23a. The free ends of the pair of elastic contact pieces 23b are connected to the horizontal substrate 23a in the figure. Abuts on its own due to its elasticity. In the center of the horizontal substrate 23a, the resistance element 10
An insertion hole 23c through which the outer lead portion 10a is inserted is formed, and the tip of the outer lead portion 10a is
It is guided to the contact position between them.

The mounting portion 26 is formed of a plate-like piece that connects the resistance connection portion 23 and the external connection portion 25 in the vertical direction, and has locking claws 26a on both sides for positioning and fixing the terminal 11 in the terminal receiving recess 22. Are formed.

The external connection portion 25 is formed by being bent obliquely upward from the lower end of the mounting portion 26, and an L-shaped flange piece 25a is provided upright along the sides and the end. The flange piece 25a reinforces the middle of the external connection portion 25 so as not to bend.
Is configured such that a lower end of the mounting portion 26 is a base end, and a front end thereof is bent up and down.

FIGS. 10 and 11 show a state in which the terminal 11 configured as described above is accommodated in the terminal accommodating recess 22. FIG. FIG. 11 is a longitudinal sectional view of the terminal accommodating recess 22 taken along a direction perpendicular to FIG. 10.

The terminal accommodating recess 22 is formed in a rectangular cylindrical shape by a peripheral wall 21 erected from the flat side (lower side in the figure) to the bottom side (upper side in the figure) of the box-shaped housing 4.
A pair of mounting grooves 21a are formed in the inner wall surface of the main body 1 in the vertical direction. With the mounting groove 21a interposed therebetween, the resistance connection portion 23 of the terminal 11 is accommodated in the terminal accommodation concave portion 22 on the left side shown in FIG. 11, and the external connection portion 25 is accommodated on the right side.

A lead insertion hole which opens on the plane side of the box-shaped housing 4 through a guide hole 27a communicates with the inside (below) of the terminal accommodating recess 22 in which the external connection portion 25 is accommodated. An external lead wire 24 inserted from the side can be inserted into the terminal accommodating recess 22.

A cylindrical resistance housing portion 28 for housing and positioning the resistance element 10 is continuous with the terminal housing recess 22 inside (below) the terminal housing recess 22 in which the resistance connection portion 23 is housed. It is formed. A narrow lead insertion passage 29 is recessed in the inner bottom surface of the resistance accommodating portion 28, and the resistance element 10 is placed on a step formed by the recess, and the inner lead portion 10 b is led out to the lead insertion passage 29. It is supposed to be.

As described above, the resistance accommodating portion 28 is located inside the terminal accommodating recess 22, that is, the terminal accommodating recess 2.
Since the two housings 4 are formed in the shape projected onto the plane, the formation of the resistance accommodating portions 28 does not increase the size of the housing 4. The resistance element 10
By the peripheral wall 21 forming the terminal accommodating concave portion 22,
Since it is insulated from other components such as the contact 5 and the ground-side discharge electrode 12, there is no need to provide another partition for insulating the resistance element 10.

As shown in FIG. 10, the resistance accommodating portion 28
Is formed in the partition wall around the peripheral wall 21 and the press-contact groove 17 by forming a slit.
It extends to a portion that crosses the two rows of press contact grooves 17.

A method of connecting and assembling the resistance element 10 to the CRT socket thus configured will be described below.

The components such as the resistance element 10 and the terminal 11 are attached to the square housing 4.
With the opening on the bottom side facing upward. Therefore, in the description of the mounting process of these parts, the bottom side is upward,
The description will be made with the plane side being the lower side.

First, the resistance element 10 is connected to the outer lead portion 1.
0a is set up, and the inner lead portion 10b is set up so as to be set downward, and is accommodated in the resistance accommodating portion 28. Resistance housing 2
When the resistance element 10 is accommodated in the outer lead portion 10,
a protrudes into the terminal receiving recess 22 above the resistance receiving portion 28. Further, the inner lead portion 10b is led out from below the resistance accommodating portion 28 to the lead insertion passage 29, and is guided by the lead insertion passage 29, and the leading end portion thereof has two rows of the press contact concave grooves 17a.
Is temporarily held in a state of intersecting with.

Subsequently, the terminal 11 is horizontally supported so that the resistance connection portion 23 is above the resistance element 10 and the external connection portion 25 is above the guide hole 27a.
The terminal 11 is press-fitted from above the terminal accommodating recess 22 while sliding the locking claw 26 a into the mounting groove 21 a of the terminal accommodating recess 22. At this time, the outer lead portion 10a of the resistance element 10 is inserted through the insertion hole 23c of the resistance connection portion 23 and is sandwiched between the elastic contact pieces 23b.

Therefore, when the terminal 11 is completely accommodated in the terminal accommodating recess 22, the locking claw 26a is engaged with the mounting groove 21a and fixed in the terminal accommodating recess 22, and the terminal 11 and the resistance element 10 Are electrically connected. As shown in FIG. 11, the tip of the external connection portion 25 elastically contacts the inner wall surface of the terminal receiving recess 22 above the guide hole 27a by its own elasticity.

After the terminal 11 is attached, the connecting plate 18 in which the focus contact 8 and the focus side discharge electrode 14 are integrated is attached to the box-shaped housing 4.

This attachment is performed by pressing the connecting plate 18 from above as shown in FIG. Connecting plate 1
8 is pressed, and a pair of press contact plate portions 19 provided on both sides of the connecting plate 18 are pressed into the two rows of press contact concave grooves 17, respectively.
The resistance element 1 temporarily held so as to intersect with the pressing groove 17.
The zero inner lead portion 10b is sandwiched by the press contact slits 20, and is electrically connected to the connection plate 18, that is, the focus contact 8. As a result, the resistive element 10 is connected in series between the terminal 11 and the focus contact 8.

The press-contact plate 19 is press-fitted into the press-contact concave groove 17, whereby the connecting plate 18 is positioned and fixed to the box-shaped housing 4. In this state, as described above, the focus contact 8 is moved to the contact-receiving recess 7 Housed in
The focus-side discharge electrode 14 is fitted into the mounting frame 15a on the front surface of the discharge gap chamber 13, and is fixed in position.

Thereafter, the periphery of the rectangular plate of the ground-side discharge electrode 12 is fitted into the mounting frame 15b on the rear surface of the discharge gap chamber 13, and the ground-side discharge electrode 12 is mounted.
Inside, the focus side discharge electrode 14 and the ground side discharge electrode 12 face each other to form a discharge gap.

After attaching each component to the square housing 4, a plurality of contacts 5 are attached to the base housing 3, and the square housing 4 is accommodated in the rear portion of the base housing 3 as shown in FIG. Are engaged and integrated.

A CRT incorporating each component as described above
The socket is mounted on a printed wiring board in the television receiver, and then one end of an external lead wire 24 connected to a flyback transformer is inserted through a lead insertion hole 27 opened on the plane side of the box-shaped housing 4. The tip of the external lead wire 24 inserted through the lead insertion hole 27
It is inserted into the terminal accommodating recess 22 through the guide hole 27 a and is sandwiched between the inner wall surface and the external connection portion 25.

Therefore, the resistance element 10 is connected in series between the focus lead 8 and the external lead wire 24 having one end connected to the flyback transformer.

The present invention is not limited to the above embodiment, but can be variously modified. For example, the square housing 4 may be separately provided with a lid for covering the opening surface, and may be integrated with the base housing 3.
May be made upside down, and the opening side of the box-shaped housing 4 may be the connection side with the CRT.

The connecting plate 18 is formed integrally with the focus contact 8 and the discharge electrode 14. However, if the connecting plate 18 is electrically connected to each other after being attached to the square housing 4, it is not necessarily integrated with these components. There is no need to mold with.

Further, in the above-described embodiment, the resistance element 10 is inserted into the resistance accommodating portion 28 before the terminal 11 is attached, but the outer lead portion 10a is connected to the resistance connection portion 23 of the terminal 11 in advance. Connect and Terminal 1
1 and the resistance element 10 is connected to the square housing 4
It may be mounted inside.

Further, the pressing grooves 17 need not be arranged in two rows, but may be arranged in one row or three or more rows.

[0069]

According to the first aspect of the present invention, the pressure contact plate portion 19 is provided.
Of the inner lead portion 10b of the resistance element 10
Can be electrically connected to the focus contact 8, and there is no need to press-fit a lead portion bent in a narrow space of the CRT socket, so that the resistance element 10 can be easily connected.

According to the second aspect of the present invention, in addition to the first aspect of the present invention, since the resistance accommodating portion 28 is further provided inwardly in the terminal accommodating concave portion along the mounting direction of the terminal 11, the inside of the CRT socket is provided. By utilizing the empty space, the resistance housing portion 28 for housing the resistance element 10 can be formed.

Further, the peripheral wall 21 for insulating the terminal 11 from other components is continued as it is,
0 may be a partition wall that insulates other components.

According to the third aspect of the present invention, in addition to the first or second aspect, the focus contact 8 and the connecting plate 1
8 and the focus-side discharge electrode 14 are integrally formed, so that the number of components does not increase, and the work of attaching these to the square housing 4 can be simplified.

[Brief description of the drawings]

FIG. 1 is a plan view of a CRT socket 2 provided with a resistance element connection structure 1 for a CRT socket according to an embodiment of the present invention.

FIG. 2 is a side view of the CRT socket 2.

FIG. 3 is a partially exploded side view of the CRT socket 2;

FIG. 4 is a bottom view of the CRT socket 2 from which the base housing 3 is omitted.

5A is a plan view of the square housing 4, and FIG.
Is a bottom view, and FIG.

FIG. 6 is a perspective view of a main part of the square housing.

7A is a side view of the terminal 11, FIG.
Is a front view, and FIG.

FIG. 8A is a side view of a connecting plate 18 in which the focus contact 8 and the focus side discharge electrode are integrally connected.
(B) is a plan view.

FIG. 9 is a perspective view showing a state in which the inner lead portion 10b of the resistance element 10 is pressed by the pressing slit 20 of the pressing plate 19;

FIG. 10 shows a configuration of the resistance connection portion 23 of the terminal 11;
FIG. 5 is a longitudinal sectional view of the inner lead portion 10b cut along a wiring direction.

FIG. 11 is a longitudinal sectional view of the terminal accommodating recess 22 cut in a direction orthogonal to FIG.

FIG. 12 is a plan view of a conventional CRT socket 101.

FIG. 13 is a rear view of a main part of the CRT socket 101 excluding a bottom cover 102c.

FIG. 14 shows a conventional resistance element connection structure 1 of a CRT socket.
It is a principal part perspective view which shows 00.

FIG. 15 is a longitudinal sectional view of a CRT socket showing another conventional resistance element connection structure 120 for a CRT socket.

16 is a perspective view of a relevant part showing a resistance element connection structure 120 of the CRT socket of FIG. 15;

[Explanation of symbols]

 2 CRT socket 4 Masu-shaped housing 4a Opening surface 8 Focus contact 7 Contact receiving recess 10 Resistor element 10a Outer lead portion 10b Inner lead portion 11 Terminal 12 Ground side discharge electrode 13 Discharge void space 14 Focus side discharge electrode 17 Pressure contact groove 18 Connection plate DESCRIPTION OF SYMBOLS 19 Pressure contact plate part 20 Pressure contact slit 22 Terminal recess 23 Resistance connection part 24 External lead wire 25 External connection part 28 Resistance accommodation part

Claims (3)

(57) [Claims] A contact housing recess (7) for housing a focus contact (8) connected to a focus pin of a cathode ray tube in a square housing (4) having an opening surface (4a) on one side, and an external lead wire (4). Terminal housing recess (22) for housing terminal (11) connected to 24)
And a discharge gap chamber (13) for receiving the focus-side discharge electrode (14) connected to the focus contact (8) and the ground-side discharge electrode (12) across a discharge gap, and forming a contact receiving recess (7). The resistive element (10) is connected in series between the focus contact (8) attached to the terminal receiving recess (22) from the opening surface (4a) and the focus contact (8) attached to the terminal receiving recess (22) from the opening surface (4a). In the resistance element connection structure of a CRT socket, a pressure contact plate portion (19) having a pressure contact slit (20) recessed in a connection plate (18) for integrally connecting the focus contact (8) and the focus side discharge electrode (14). A press-contact groove (17) for press-fitting the press-contact plate (19) is formed in a portion adjacent to the contact accommodating recess (7) in the square housing (4). The inner lead portion (10b) of the resistance element (10) having the outer lead portion (10a) connected to the terminal (11) is temporarily held so as to intersect with the press-contact groove (17). From the opening surface (4a), press contact grooves (1
7) and press-fit the connecting plate (18) to the square housing (4).
Characterized in that the inner lead portion (10b) is pressed against the pressure contact slit (20).
Socket resistance element connection structure. 2. A terminal (11) comprising: an external connection part (25) connected to an external lead wire (24); and a resistance connection part (23) integrally connected to a side of the external connection part (25).
A resistance accommodating portion (28) is continuously provided from a portion of the terminal accommodating concave portion (22) accommodating the resistance connecting portion (23) inward along the mounting direction of the terminal (11); The resistance element connection structure for a CRT socket according to claim 1, wherein the resistance element (10) having the outer lead portion (10a) connected to the terminal (11) is accommodated in (28). 3. The CRT socket according to claim 1, wherein the connecting plate, the focus contact, and the focus-side discharge electrode are integrally formed by punching a metal plate. Resistance element connection structure.